20021112012 has 48 divisors (see below), whose sum is σ = 50982422400. Its totient is φ = 6064671360.

The previous prime is 20021111969. The next prime is 20021112053. The reversal of 20021112012 is 21021112002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332439 + ... + 388017.

It is an arithmetic number, because the mean of its divisors is an integer number (1062133800).

Almost surely, 2^20021112012 is an apocalyptic number.

20021112012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021112012 is an abundant number, since it is smaller than the sum of its proper divisors (30961310388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021112012 is a wasteful number, since it uses less digits than its factorization.

20021112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58326 (or 58324 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021112012 its reverse (21021112002), we get a palindrome (41042224014).

The spelling of 20021112012 in words is "twenty billion, twenty-one million, one hundred twelve thousand, twelve".